20298850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1$

素因数の和:220

約数の個数: 96

約数和(自身を含む): 47246976

約数和(自身を除く): 26948126

約数列:

[1, 2, 5, 10, 11, 13, 17, 22, 25, 26, 34, 50, 55, 65, 85, 110, 130, 143, 167, 170, 187, 221, 275, 286, 325, 334, 374, 425, 442, 550, 650, 715, 835, 850, 935, 1105, 1430, 1670, 1837, 1870, 2171, 2210, 2431, 2839, 3575, 3674, 4175, 4342, 4675, 4862, 5525, 5678, 7150, 8350, 9185, 9350, 10855, 11050, 12155, 14195, 18370, 21710, 23881, 24310, 28390, 31229, 36907, 45925, 47762, 54275, 60775, 62458, 70975, 73814, 91850, 108550, 119405, 121550, 141950, 156145, 184535, 238810, 312290, 369070, 405977, 597025, 780725, 811954, 922675, 1194050, 1561450, 1845350, 2029885, 4059770, 10149425, 20298850]

約数ペア:

[(1, 20298850), (2, 10149425), (5, 4059770), (10, 2029885), (11, 1845350), (13, 1561450), (17, 1194050), (22, 922675), (25, 811954), (26, 780725), (34, 597025), (50, 405977), (55, 369070), (65, 312290), (85, 238810), (110, 184535), (130, 156145), (143, 141950), (167, 121550), (170, 119405), (187, 108550), (221, 91850), (275, 73814), (286, 70975), (325, 62458), (334, 60775), (374, 54275), (425, 47762), (442, 45925), (550, 36907), (650, 31229), (715, 28390), (835, 24310), (850, 23881), (935, 21710), (1105, 18370), (1430, 14195), (1670, 12155), (1837, 11050), (1870, 10855), (2171, 9350), (2210, 9185), (2431, 8350), (2839, 7150), (3575, 5678), (3674, 5525), (4175, 4862), (4342, 4675)]